Fuel metering and feeding device



NOV- 5, 1929; w rr 1,734,659 1 FUEL METERING AND FEEDING DEVICE Filed May 2, 1921 fizz/$72757: ($516555: lie/M92 IW Z I Patented Nov. 5, 1929 EZEKIEL FIELD wnrrnor CH CAGO, ILLINOIS FUEL METERING Am FEEDING "DEVICE Application filed May 2, 1921. Serial No. 466,348.

This invention relates to a fuel metering and feeding device.

One object of the invention is to provide a simple, eflicient and durable device which is capable of accurately metering and feeding fuel in an improved manner whereby the fed fuel isvaporized and prepared for complete combustion upon being mixed with the proper amount of air.

Another object is to provide an improved metering and feeding device which is particularly adapted for efficient use in connection with low grade oils.

These and other objects are accomplished 15 by meansof the device shown on the accompanying sheet of drawings, the single figure showing the device proper in a vertical longitudinal sectional view.

The various novel features of my invention will be apparent from the following description and drawings and will be particularly pointed out in the appended claims:

Referring to the drawings, it will be noted that the device includes a casing forming a fuel supply chamber 11, an intermediate chamber 12' and a compression chamber 13, fuel in thisparticular embodiment of the invention, being supplied to chamber 11 through a pipe 14:, through which oil is forced by a pump 16 which drawsrthe oil through a pipe The plunger of the pump is actuated through-a pitman 17 pivotally con- .nected at 18 to apin mounted on a flange onthe shaft 19. The fuel chamber llis provided with an overflow" pipe 20 which controls the height of the fuel within the chamber. 'It will be noted that thefuel supply chamber llis larger than the intermediate chamber 12 and that the latter is larger than the compression chamber 13. V

Slidably mounted in the compression chamber 13 is a stem 21" formed at the lower end of a plunger 22, having an intermediate portion adapted to receive and .measure charges of hydrocarbon supplied from the fulfcliamber 1 1. and, then transfer same to the intermediate chamber 12. In this particular instance, the measured quantity of hydrocarbon is transferred in circumferential grooves 23 formed in the periphery of an intermediate portion of the plunger 22. The plunger is reciprocated in a sleeve'24, the latter of which is provided with a plurality of openings 25 forming passageways for hydrocarbon which is transferred from the chamber'll to a relatively small chamber 26 within the sleeve 24, from which the hydrocarbOnispaSSed directly into the grooves 23 of the plunger. The plunger is reciprocated through a bell crank lever 27, one arm of which is provided with an elongated slot 28 in which a pin 29 on the plunger may move, the other arm 30 of the bell crank lever being actuated in one direction by a cam 31' mounted upon the shaft 19for raising the plunger. A spring 33 forces the plunger in its downward movement. This spring preferablyis mounted in a cup-shaped member 34: at the upper endof the plunger 22 and is provided with a cap 35, the position of which '70 may be changed by threaded means 36 for varying the tensionof the spring. v

Secured to thelower end of the casing ,10 is a nozzle 37 having a passageway 38, which communicates with the compression chamber '13. Adjustably mounted in the nozzle 37 is a valve 39 for controlling the size of the outlet of the nozzle and accordingly the flow" of fuel thereth'rough. The fuel supply chamber is provided with a vent 45 whereby air is suppliedto said chamber. -An air connection 46 is provided between the fuel supply chamber 11-,and intermediatechamber for. a' purpose to be described later. The main gear 32, shaft 19, cam 31, plunger-22,85- and pump 16'are driven by a motor 40 through a shaft 41 and a worm 42 meshing with the gear 32. -The motor preferably is mounted on a bracket 43' towhich all other parts are directly or indirectly connected, thereby 90,

forming a':compact unitary equipment;-

.In connection with the o eration of the'device, it will be understood t at when the plunger 22 is raisedinto a position where the receivinggr'ooves 23 reach the chamber 26, fuel will ,flow'into' and. fill all exposed grooves,

whereupon the spring eawilr forceably drive the plunger. 22" downwardly when the tip of arm 30 of the bell crank'lever' 27has passed the high .spoton cam 31, a measuredquan- 1 00 cordingly, the stem 21 into the compression chamber 13, the fuel, a combination of the hydrocarbon and air therein will be compressed to a relatively high degree causing a rise in temperature and a partial vaporization of the latter as it is forceably ejected outwardly through the nozzle 37. This vaporized fuel may be used in any of the many known manners such as in internal combustion engines, fire boxes, etc. Said vaporized fuel when mixed with the proper amount of air forms a combustible mixture which may be efiiciently burned. By means of this device, the relatively, heavy or crude oils may be efiiciently used, and, as a matter of fact, the use of the device is not limited to liquid fuels for the same may be used in connection with powdered and gaseous fuels.

The quantity of fuel transferred from the mainfuel supply chamber 11 to the intermediate chamber 12, upon eachstroke of the plunger 22, is controlled in this case by the number of grooves 23 which are exosed to the chamber 26 associated with fuel supply chamber 11. If it is desired to decrease the measured charge upon each stroke, the same may be accomplished by raising the sleeve 24 by turning the latter in the desired directions, it. being noted that the sleeve 24 is threaded in a bushing 44 carried in the up per part of the casing 10. As shown, the

sleeve 21isin one of its limiting positions wherein the maximum'measuredcharge is supplied upon each stroke of the plunger 22.

By means of this arrangement, fuels of various descriptions are fed, accurately metered and compressed within the device and discharged therefrom in a partially vaporized state in condition to be mixed with proper proportions of air to form a combustible mixture which may be used in any desired manner. r I

It will be understood that air for forming a part of the fuel mixture which is compressed in compression chamber13 is admitted first to chamber 11 through the opening 45 and then passes through the connection 4'6 between chambers ll and 12 and into the latter chambeiz Such air thenpasses into the com- 'pression chamber 13 with the hydrocarbon when the stem 21 is lifted out of chamber 13. Itis my intention to cover all modifications of the invention falling within the spirit and scope of the following claims.

I claim:

1. In a device of the class described, the combination of an oil supply chamber, a compression chamber, and a plunger having means for transferring oil from said fuel chamber towards said compression chamber, said plunger also having a portion operable in said compression chamber, which, when moved outwardly from said compression chamber causes a vacuum which draws the oil mixed with air into said compression chamber preparatory to the mixture being compressed therein by said plunger portion.

2. In a device of the class described, the combination of an oil supply chamber, an in,- termediate chamber, a compression chamber, a plunger having portions operable in said chambers, one of said portions for'transferring oil from said supply chamber to said intermediate chamber and another'of said portions operable in said compression chamber for compressing a mixture.including oil transferred from said intermediate chamber to said compression chamber. r

3. In a device of the class described, the combination of an oil supply chamber, an intermediate chamber, a compression'chamber, a plunger having portions operable in i said chambers, one portion of said plunger having transfer means whereby a measured charge of oil may be transferred from said supply chamber to said intermediate chamber, said plunger having another portion r'eciprocated in said compresison chamber for creating a vacuum therein for drawing air and oil from said intermediate chamber to said compression chamber duringone stroke and for compressing the mixture'in said compression chamber during another stroke.

at. In a device of the class'described,the combination of an oil supply-chamber, an intermediate chamber, a compression chamber, a plunger. having portions operable in said chambers, one portion ofsaid plunger having transfer means whereby ameasured.

charge of the oil may be transferred from said supply chamber to said intermediate chamber, said plunger having another portion reciprocated in said compression chamber for creating a vacuum therein for drawing air and oil from said intermediate chamber into said compression chamber during onestroke, and for compressing the mixture. in said compression chamber during another stroke, and means for varying the quantity of measured charge transferred. j

Signed at- Chicago, Illinois, this 28th day of April, 1921. 3

EZEKIEL FIELD WHITE. 

